Machine for casting printing plates



d July 12, 1960 P. L. TOLLISON ETAL MACHINE FOR CASTING PRINTING PLATES Filed June 2, 1955 I 19 Sheets-Sheet 1 FIG. 2

INVENTORS PAUL L. TOLLISON BYCHARLES L. RICARDS w {M MNIM ATTO R N EYS July 12, 1960 P. L. TOLLISON ETA]. 2,944,305

MACHINE FOR CASTING PRINTING PLATES Filed June 2, 1955 19 Sheets-Sheet 2 ATTQRNEYS July 12, 1960 P. L. TOLLISON ETAL MACHINE FOR CASTING PRINTING PLATES Filed June 2, 1955 19 Sheets-Sheet 3 PAU L L. TOLLISON CHAR LES L. RICARDS ATTORNEYS July 12, 1960 P. L. TOLLISON ETAL 2,944,306

MACHINE FOR CASTING PRINTING PLATES 19 Sheets-Sheet 4 Filed June 2, 1955 INVENTORS PAUL L. TOLLISO CHARLES L. RICAR 24%;, M, M [3 472. 4.

ATTORNEYS FIG. 9

WAVI/IA July 12, 1960 P. 1.. TOLLISON ETAL 2,944,306

MACHINE FOR CASTING PRINTING PLATES l9 Sheets-Sheet 5 Filed June 2, 1955 PAUL L. TOLLISON BY CHARLES L.R|CARDS ATTORNEYS July 12, 1960 P. L. TOLLISON ETAL 2,944,306

MACHINE FOR CASTING PRINTING PLATES l9 Sheets-Sheet 6 Filed June 2, 1955 BY M BM' EN EN NNN ATTORNEYS July 12, .1960

Filed June 2, 1955 P. 1.. TOLLISON ETAL 2,944,306

MACHINE FOR CASTING PRINTING PLATES 19 Sheets-Sheet 7 INVENTORS PAUL L. TOLLISON CHARLES L. RICARDS FIG '2 BY 5M.

ATTORNEYS July'12, 1960 P. TOLLISON ETAL 2,944,306

MACHINE FOR CASTING PRINTING PLATES 19 Sheets-Sheet 8 Filed June 2, 1955 llllllllll |l.\\\-

INVENTORS PAUL L. TOLLISON CHARLES L. RICARDS I 1 (II I IIIV.

ATTORNEYS P. 1.. TOLLISON ET AL 2,944,306

MACHINE FOR CASTING PRINTING PLATES July 12, 1960 19 Sheets-Sheet 9 Filed June 2, 1955 INVENTORS PAUy. 1.. TOLLISON CHARLES L.R|CARDS flriM-Jl MIBM'US PZV ATTORNEYS July 12, 1960 Filed June 2, 1955 P. L. TOLLISON ETAL 2,944,306

MACHINE FOR CASTING PRINTING PLATES 19 Sheets-Sheet 10 ATTORNEYS July 12, 1960 P. L. TOLLISON ETAL MACHINE FOR CASTING PRINTING PLATES l9 Sheets-Sheet 11 Filed June 2, 1955 INVENTOR? PAUL L. TOLLI ON B$HARLES LAR|CARD$ Mr V) ATTORNEYS July 12, 1960 PL. TOLLISON ETAL 2,944,306

MACHINE FOR CASTING PRINTING PLATES 19 Sheets-Sheet 12 Filed June 2, 1955 INVENTORS PAUL L. TOLLiSON BY CHARLES L4 RICARDS 6M, M 712 1;,

ATTORNEYS July 12, 1960 P. L. TOLLISON ET AL ,3 5

MACHINE FOR CASTING PRINTING PLATES Filed June 2,1955 19 Sheets-Sheet 13 FIG. 23

INVENTORS PAUL L. TOLLISON CHARLES L. RICARDS ATTORNEYS July 12, 1960 P. L. TOLLISON ETAL 2,944,306

MACHINE FOR CASTING PRINTING PLATES Filed June 2, 1955 I 19 Sheets-Sheet 14 INVENTORS PAUL L.YTOLLIS BY CHARLES RICA 2M4 M,M 1L4. r 1% ATTORNEYS July 12, 1960 P. L. TOLLISON ETAL MACHINE FOR CASTING PRINTING PLATES Filed June 2, 1955 19 Sheets-Sheet 15 FIG. 26

IN V EN TORS PAUL L. TOLL IS ON By CHARLES L.R|CARDS ATTOR N EYS July 12, 1960 P. L. TOLLISON ETAL 2,944,306

MACHINE FOR CASTING PRINTING PLATES 19 Sheets-Sheet 16 Filed June 2, 1955 ATTORNEYS July 12, 1960 P. L. TOLLISON ETAL 2,944,306

MACHINE FOR CASTING PRINTING PLATES Filed June 2, 1955 19 Sheets-Sheet 1'7 FIG. 30

elm-fry IQAEEM 5 \\'m|\\ HT 2n 201-1;

:1 FIG. 32

INVENTOR S PAUL L. TOLLISON CHARLES L. RICARDS ATTORNEYS y 12, 1960 P. L. TQLUSQN E1- AL 2,944,306

MACHINE FOR CASTING PRINTING PLATES mm QE INVENTORS UL L. TOLLISON CHARLES L. RICARDS BY EM,&N'MHBMMJQ,Q-/

19 Sheets-Sheet l8 lllllll ll Filed June 2, 1955 ATTORNEYS July 12, 1960 P. L. TOLLISON ET AL 2,944,306

MACHINE FOR CASTING PRINTING PLATES 19 Sheets-Sheet 19 Filed June 2, 1955 TIME SWITCH Patented Jul 12,1960

w p r 1 2,944,30 V MAcH'iNE' For: CASTING PRINTING PLATES Paul L. Tollison, North Plainfield, and Charles L. Ricards, South Plain'field, N.J., assignors to Wood Newspaper Machinery Corporation, Plainfield, NJ., a corporation of Virginia Filed June 2, 1955, Ser. No. 512,822

15'Claims'. 01. 22-3 This application relates to machines for casting printing plates of the type wherein segmental cylindricalprinting plates are cast against papier-mache matrices, trimmed to accurate size and exact thickness, properly grooved and beveled for attachment to the cylinders of the printing press and cooled.

The principal object of the invention is to provide a machine of this character of simple, compact design with the mechanisms for carrying out the several operations so co-ordinated that one operator can produce finished plates ready for use in a matter of seconds.

A further object to the invention is to provide a machine which is substantially automatic so that the several operations will take place in properly timed sequence without failure and with absolute accuracy even when the machine is operated by an inexperienced operator.

A further object ofthe invention is to provide a machine in which the various instrumentalities are so dei signed as to insure absolute safety to the operator, regardless of his inattention and failure to observe the customary precautions. I V e I Other objects of the invention will be apparent from the accompanying drawings and following specification wherein a commercial model of the machine as now being manufactured and sold is' shown and described in detail.

Referring to the drawings: I 1 Fig. l is a plan view of the entire machine; Fig. 2 is a side elevation of the entiremachine; Fig. 3 is a side elevation of the pneumatic metal pump, partially in section; v Fig. 4 is a side elevation looking from the left of Fig. 3 of the upper part of the pneumatic'pump with parts broken away; 1 i

Fig. 5 is a detail view of a part of the pump operating connections and controls; I i

Fig. 6 is a plan view of the casting box; Fig. 7 is an elevation of the parts shown in ing from the left of Fig. 2; i

Fig. 8 is a section along line 8-8 of Fig. 7; Fig. 9 is a section along line 9-9 of Fig. 6; Fig. 10 is a perspective of the nozzle and its wiper with parts omitted; I

Fig. 11a is a longitudinal section of the of the machine;

Fig. 11b is a continuation of Fig. 11a, showing the plate trimming and cooling sections;

Fig. 12 is a transverse section along line 12-12 of Fig. 11a with parts broken away; V a

Fig. 13 is a section along line 13-13 of Fig. l2,partially broken away; p

Fig. 14 is a similar view along'line14-14 of Fig. 12;

Fig. 6 lookcasting section Fig. l9is a detail view, partly in section, along line 19-19 of Fig. 18;.

Fig. 20 is. a detail view partly in section of the plate position stop;

Fig: 21 is a detail section along line 21-21 of Fig. 20';

Fig. 22 is a longitudinal section of the plate lifting mechanism along line 22-22 of Fig. 25;

Fig. 23; is a transverse section along line 23-23 of Fig. 22;

Fig. 24 is a transverse section along line 24-24 of Fig. 22; i

Fig. 25 is a transverse section along line 25-25 of Fig. 22;

Fig. 26- is a sectional detail along line 26-26 of Fig. 25 Figs. 27 and 28 are diagrammatic views showing the operations of the plate positioning mechanism;

Fig. 29 is a detail section on line 29-29 of Fig. 11a;

Fig. 30 is an end elevation of the platecooling stand; .Fig. 31 is a fragmentary elevation of the plate stop device; r I I Fig. 32 is a section along line 32-32 of Fig.33; Fig. 33 is'a plan view ofthe cooling stand; Y Fig. 34 is a detail view of a portion-of the control mechanism; and

' Fig. 35 is a wiring diagram of the control mechanisms for the metal pump.) f' p Referring to the drawings particularly to Figs. 1-5, inclusive, the pump comprises a main casting 1 having at its lower end a cylinder 2 which is normally submerged in the molten metal in the furnace 3. The pump piston 4 consists of a metal disk whose outer perimeter is grooved as is customary in pumps of this character. The piston 4 is mounted on the piston rod 5 adjacent its end for limited lost motion above a disk, 6 attached to the lower end of the piston rod. The ,diskg6 is provided with a marginal flange which is ground to seat. against a flange 7 on the under side 'of the piston 4 's'urrounding holes 8. When the piston rod is elevated by the pneumatic operatingmechanism which will be later described, the flange of the disk'6 -seats against the flange 7 of the piston and lifts the piston in the cylinder, thereby forcing the molten metal upward through the discharge passage 9=which is cast integral with the cylinder. 2. On the downward stroke the piston 4 is pushed away from the disk 6, allowing the metal to pass through the holes 8 into the cylinder.

a The main casting 1 of the pump is fixedly attached 7 to the under side of a bifurcated bracket 10 which Fig. 15 is a similar view along line 15-15 of 'Fig.-'l 2;

thesameplane as Figs. 11a an d llb showing the driving n ec :lia.nisrn for the shaving andtrimmingknives;

. is actuated by compressed air supplied to a cylin projects .rearwardly from the main frame casting 11 to which the stationary half of the mold 12 is fixedly attached.

For conveying the molten metal to the mold the'passage 9 is provided with an extension 13 which extends upwardly between the two parts of the bifurcated bracket 10 and forwardly to a position immediately'ove'rlying the opening between the two halves of the mold,'as shown more particularly in Figs. 7 and 8. As here shown the extension 13 is providedwith a discharge spout 14 of arcuate configuration overlying the opening into the mold and with a pivoted cutoif lip 15 which normally closes the discharge spout when the mold is open but is swung back from beneath the discharge spout when the mold is closed and locked, as will be later described. 1 Referring a'gain to 'Figs. 3,- 4 and 5, the pump piston 16 supported at the upper end of the pistonrod on a casting 1 7 fixedly mounted on top bf-the casting 1. The casting 17 is provided with a forwardlyfiextending portion 18 uponwhich is mounted the valve mechanism and other parts for controlling the operation of the pump. The compressed air' from'a source, not shown, is supplied to th intake pipe 19 atapproximately -100 pounds 

